<template>
	<view :class="'interlayer ' + (c || '')" :style="s">
		<block v-for="(n, i) in nodes" v-bind:key="i">
			<!--图片-->
			<view v-if="n.name == 'img'" :class="'_img ' + n.attrs.class" :style="n.attrs.style" :data-attrs="n.attrs"
				@tap="imgtap">
				<rich-text v-if="ctrl[i] != 0"
					:nodes="[{ attrs: { src: loading && (ctrl[i] || 0) < 2 ? loading : (lazyLoad && !ctrl[i] ? placeholder : (ctrl[i] == 3 ? errorImg : n.attrs.src || '')), alt: n.attrs.alt || '', width: n.attrs.width || '', style: '-webkit-touch-callout:none;max-width:100%;display:block' + (n.attrs.height ? ';height:' + n.attrs.height : '') }, name: 'img' }]" />
				<image class="_image" :src="lazyLoad && !ctrl[i] ? placeholder : n.attrs.src" :lazy-load="lazyLoad"
					:show-menu-by-longpress="!n.attrs.ignore" :data-i="i" :data-index="n.attrs.i" data-source="img"
					@load="loadImg" @error="error" />
			</view>
			<!--文本-->
			<text v-else-if="n.type == 'text'" decode>{{ n.text }}</text>
			<!--#ifndef MP-BAIDU-->
			<text v-else-if="n.name == 'br'">\n</text>
			<!--#endif-->
			<!--视频-->
			<view
				v-else-if="((n.lazyLoad && !n.attrs.autoplay) || (n.name == 'video' && !loadVideo)) && ctrl[i] == undefined"
				:id="n.attrs.id" :class="'_video ' + (n.attrs.class || '')" :style="n.attrs.style" :data-i="i"
				@tap="_loadVideo" />
			<video v-else-if="n.name == 'video'" :id="n.attrs.id" :class="n.attrs.class" :style="n.attrs.style"
				:autoplay="n.attrs.autoplay || ctrl[i] == 0" :controls="n.attrs.controls" :loop="n.attrs.loop"
				:muted="n.attrs.muted" :poster="n.attrs.poster" :src="n.attrs.source[ctrl[i] || 0]"
				:unit-id="n.attrs['unit-id']" :data-id="n.attrs.id" :data-i="i" data-source="video" @error="error"
				@play="play" />
			<!--音频-->
			<audio v-else-if="n.name == 'audio'" :ref="n.attrs.id" :class="n.attrs.class" :style="n.attrs.style"
				:author="n.attrs.author" :autoplay="n.attrs.autoplay" :controls="n.attrs.controls" :loop="n.attrs.loop"
				:name="n.attrs.name" :poster="n.attrs.poster" :src="n.attrs.source[ctrl[i] || 0]" :data-i="i"
				:data-id="n.attrs.id" data-source="audio" @error.native="error" @play.native="play" />
			<!--链接-->
			<view v-else-if="n.name == 'a'" :id="n.attrs.id" :class="'_a ' + (n.attrs.class || '')" hover-class="_hover"
				:style="n.attrs.style" :data-attrs="n.attrs" @tap="linkpress">
				<trees class="_span" c="_span" :nodes="n.children" />
			</view>
			<!--广告-->
			<!--<ad v-else-if="n.name=='ad'" :class="n.attrs.class" :style="n.attrs.style" :unit-id="n.attrs['unit-id']" :appid="n.attrs.appid" :apid="n.attrs.apid" :type="n.attrs.type" :adpid="n.attrs.adpid" data-source="ad" @error="error" />-->
			<!--列表-->
			<view v-else-if="n.name == 'li'" :id="n.attrs.id" :class="n.attrs.class"
				:style="(n.attrs.style || '') + ';display:flex;flex-direction:row'">
				<view v-if="n.type == 'ol'" class="_ol-bef">{{ n.num }}</view>
				<view v-else class="_ul-bef">
					<view v-if="n.floor % 3 == 0" class="_ul-p1">█</view>
					<view v-else-if="n.floor % 3 == 2" class="_ul-p2" />
					<view v-else class="_ul-p1" style="border-radius:50%">█</view>
				</view>
				<trees class="_li" c="_li" :nodes="n.children" :lazyLoad="lazyLoad" :loading="loading" />
			</view>
			<!--表格-->
			<view v-else-if="n.name == 'table' && n.c" :id="n.attrs.id" :class="n.attrs.class"
				:style="(n.attrs.style || '') + ';display:table'">
				<view v-for="(tbody, o) in n.children" v-bind:key="o" :class="tbody.attrs.class"
					:style="(tbody.attrs.style || '') + (tbody.name[0] == 't' ? ';display:table-' + (tbody.name == 'tr' ? 'row' : 'row-group') : '')">
					<view v-for="(tr, p) in tbody.children" v-bind:key="p" :class="tr.attrs.class"
						:style="(tr.attrs.style || '') + (tr.name[0] == 't' ? ';display:table-' + (tr.name == 'tr' ? 'row' : 'cell') : '')">
						<trees v-if="tr.name == 'td'" :nodes="tr.children" />
						<trees v-else v-for="(td, q) in tr.children" v-bind:key="q" :class="td.attrs.class"
							:c="td.attrs.class"
							:style="(td.attrs.style || '') + (td.name[0] == 't' ? ';display:table-' + (td.name == 'tr' ? 'row' : 'cell') : '')"
							:s="(td.attrs.style || '') + (td.name[0] == 't' ? ';display:table-' + (td.name == 'tr' ? 'row' : 'cell') : '')"
							:nodes="td.children" />
					</view>
				</view>
			</view>
			<!--#ifdef APP-PLUS-->
			<iframe v-else-if="n.name == 'iframe'" :style="n.attrs.style" :allowfullscreen="n.attrs.allowfullscreen"
				:frameborder="n.attrs.frameborder" :width="n.attrs.width" :height="n.attrs.height" :src="n.attrs.src" />
			<embed v-else-if="n.name == 'embed'" :style="n.attrs.style" :width="n.attrs.width" :height="n.attrs.height"
				:src="n.attrs.src" />
			<!--#endif-->
			<!--富文本-->
			<!--#ifdef MP-WEIXIN || MP-QQ || APP-PLUS-->
			<rich-text v-else-if="handler.use(n)" :id="n.attrs.id" :class="'_p __' + n.name" :nodes="[n]" />
			<!--#endif-->
			<!--#ifndef MP-WEIXIN || MP-QQ || APP-PLUS-->
			<rich-text v-else-if="!n.c" :id="n.attrs.id" :nodes="[n]" style="display:inline" />
			<!--#endif-->
			<trees v-else :class="(n.attrs.id || '') + ' _' + n.name + ' ' + (n.attrs.class || '')"
				:c="(n.attrs.id || '') + ' _' + n.name + ' ' + (n.attrs.class || '')" :style="n.attrs.style"
				:s="n.attrs.style" :nodes="n.children" :lazyLoad="lazyLoad" :loading="loading" />
		</block>
	</view>
</template>
<script module="handler" lang="wxs" src="./handler.wxs"></script>
<script>
	global.Parser = {};
	import trees from './trees'
	const errorImg = require('../libs/config.js').errorImg;
	export default {
		components: {
			trees
		},
		name: 'trees',
		data() {
			return {
				ctrl: [],
				placeholder: 'data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="300" height="225"/>',
				errorImg,
				loadVideo: typeof plus == 'undefined',
				// #ifndef MP-ALIPAY
				c: '',
				s: ''
				// #endif
			}
		},
		props: {
			nodes: Array,
			lazyLoad: Boolean,
			loading: String,
			// #ifdef MP-ALIPAY
			c: String,
			s: String
			// #endif
		},
		mounted() {
			for (this.top = this.$parent; this.top.$options.name != 'parser'; this.top = this.top.$parent);
			this.init();
		},
		// #ifdef APP-PLUS
		beforeDestroy() {
			this.observer && this.observer.disconnect();
		},
		// #endif
		methods: {
			init() {
				for (var i = this.nodes.length, n; n = this.nodes[--i];) {
					if (n.name == 'img') {
						this.top.imgList.setItem(n.attrs.i, n.attrs.src);
						// #ifdef APP-PLUS
						if (this.lazyLoad && !this.observer) {
							this.observer = uni.createIntersectionObserver(this).relativeToViewport({
								top: 500,
								bottom: 500
							});
							setTimeout(() => {
								this.observer.observe('._img', res => {
									if (res.intersectionRatio) {
										for (var j = this.nodes.length; j--;)
											if (this.nodes[j].name == 'img')
												this.$set(this.ctrl, j, 1);
										this.observer.disconnect();
									}
								})
							}, 0)
						}
						// #endif
					} else if (n.name == 'video' || n.name == 'audio') {
						var ctx;
						if (n.name == 'video') {
							ctx = uni.createVideoContext(n.attrs.id
								// #ifndef MP-BAIDU
								, this
								// #endif
							);
						} else if (this.$refs[n.attrs.id])
							ctx = this.$refs[n.attrs.id][0];
						if (ctx) {
							ctx.id = n.attrs.id;
							this.top.videoContexts.push(ctx);
						}
					}
				}
				// #ifdef APP-PLUS
				// APP 上避免 video 错位需要延时渲染
				setTimeout(() => {
					this.loadVideo = true;
				}, 1000)
				// #endif
			},
			play(e) {
				var contexts = this.top.videoContexts;
				if (contexts.length > 1 && this.top.autopause)
					for (var i = contexts.length; i--;)
						if (contexts[i].id != e.currentTarget.dataset.id)
							contexts[i].pause();
			},
			imgtap(e) {
				var attrs = e.currentTarget.dataset.attrs;
				if (!attrs.ignore) {
					var preview = true,
						data = {
							id: e.target.id,
							src: attrs.src,
							ignore: () => preview = false
						};
					global.Parser.onImgtap && global.Parser.onImgtap(data);
					this.top.$emit('imgtap', data);
					if (preview) {
						var urls = this.top.imgList,
							current = urls[attrs.i] ? parseInt(attrs.i) : (urls = [attrs.src], 0);
						uni.previewImage({
							current,
							urls
						})
					}
				}
			},
			loadImg(e) {
				var i = e.currentTarget.dataset.i;
				if (this.lazyLoad && !this.ctrl[i]) {
					// #ifdef QUICKAPP-WEBVIEW
					this.$set(this.ctrl, i, 0);
					this.$nextTick(function() {
						// #endif
						// #ifndef APP-PLUS
						this.$set(this.ctrl, i, 1);
						// #endif
						// #ifdef QUICKAPP-WEBVIEW
					})
					// #endif
				} else if (this.loading && this.ctrl[i] != 2) {
					// #ifdef QUICKAPP-WEBVIEW
					this.$set(this.ctrl, i, 0);
					this.$nextTick(function() {
						// #endif
						this.$set(this.ctrl, i, 2);
						// #ifdef QUICKAPP-WEBVIEW
					})
					// #endif
				}
			},
			linkpress(e) {
				var jump = true,
					attrs = e.currentTarget.dataset.attrs;
				attrs.ignore = () => jump = false;
				global.Parser.onLinkpress && global.Parser.onLinkpress(attrs);
				this.top.$emit('linkpress', attrs);
				if (jump) {
					// #ifdef MP
					if (attrs['app-id']) {
						return uni.navigateToMiniProgram({
							appId: attrs['app-id'],
							path: attrs.path
						})
					}
					// #endif
					if (attrs.href) {
						if (attrs.href[0] == '#') {
							if (this.top.useAnchor)
								this.top.navigateTo({
									id: attrs.href.substring(1)
								})
						} else if (attrs.href.indexOf('http') == 0 || attrs.href.indexOf('//') == 0) {
							// #ifdef APP-PLUS
							plus.runtime.openWeb(attrs.href);
							// #endif
							// #ifndef APP-PLUS
							uni.setClipboardData({
								data: attrs.href,
								success: () =>
									uni.showToast({
										title: '链接已复制'
									})
							})
							// #endif
						} else
							uni.navigateTo({
								url: attrs.href,
								fail() {
									uni.switchTab({
										url: attrs.href,
									})
								}
							})
					}
				}
			},
			error(e) {
				var target = e.currentTarget,
					source = target.dataset.source,
					i = target.dataset.i;
				if (source == 'video' || source == 'audio') {
					// 加载其他 source
					var index = this.ctrl[i] ? this.ctrl[i].i + 1 : 1;
					if (index < this.nodes[i].attrs.source.length)
						this.$set(this.ctrl, i, index);
					if (e.detail.__args__)
						e.detail = e.detail.__args__[0];
				} else if (errorImg && source == 'img') {
					this.top.imgList.setItem(target.dataset.index, errorImg);
					this.$set(this.ctrl, i, 3);
				}
				this.top && this.top.$emit('error', {
					source,
					target,
					errMsg: e.detail.errMsg
				});
			},
			_loadVideo(e) {
				this.$set(this.ctrl, e.target.dataset.i, 0);
			}
		}
	}
</script>

<style>
/* 在这里引入自定义样式 */

/* 链接和图片效果 */
._a {
	display: inline;
	padding: 1.5px 0 1.5px 0;
	color: #366092;
	word-break: break-all;
}

._hover {
	text-decoration: underline;
	opacity: 0.7;
}

._img {
	display: inline-block;
	max-width: 100%;
	overflow: hidden;
}

/* #ifdef MP-WEIXIN */
:host {
	display: inline;
}

/* #endif */

/* #ifndef MP-ALIPAY || APP-PLUS */
.interlayer {
	display: inherit;
	flex-direction: inherit;
	flex-wrap: inherit;
	align-content: inherit;
	align-items: inherit;
	justify-content: inherit;
	width: 100%;
	white-space: inherit;
	overflow-wrap: break-word;
	
}

/* #endif */

._b,
._strong {
	font-weight: bold;
}

/* #ifndef MP-ALIPAY */
._blockquote,
._div,
._p,
._ol,
._ul,
._li {
	display: block;
}

/* #endif */

._code {
	font-family: monospace;
}

._del {
	text-decoration: line-through;
}

._em,
._i {
	font-style: italic;
}

._h1 {
	font-size: 2em;
}

._h2 {
	font-size: 1.5em;
}

._h3 {
	font-size: 1.17em;
}

._h5 {
	font-size: 0.83em;
}

._h6 {
	font-size: 0.67em;
}

._h1,
._h2,
._h3,
._h4,
._h5,
._h6 {
	display: block;
	font-weight: bold;
}

._image {
	display: block;
	width: 100%;
	height: 360px;
	margin-top: -360px;
	opacity: 0;
}

._ins {
	text-decoration: underline;
}

._li {
	flex: 1;
	width: 0;
}

._ol-bef {
	width: 36px;
	margin-right: 5px;
	text-align: right;
}

._ul-bef {
	display: block;
	margin: 0 12px 0 23px;
	line-height: normal;
}

._ol-bef,
._ul-bef {
	flex: none;
	user-select: none;
}

._ul-p1 {
	display: inline-block;
	width: 0.3em;
	height: 0.3em;
	overflow: hidden;
	line-height: 0.3em;
}

._ul-p2 {
	display: inline-block;
	width: 0.23em;
	height: 0.23em;
	border: 0.05em solid black;
	border-radius: 50%;
}

._q::before {
	content: '"';
}

._q::after {
	content: '"';
}

._sub {
	font-size: smaller;
	vertical-align: sub;
}

._sup {
	font-size: smaller;
	vertical-align: super;
}

/* #ifdef MP-ALIPAY || APP-PLUS || QUICKAPP-WEBVIEW */
._abbr,
._b,
._code,
._del,
._em,
._i,
._ins,
._label,
._q,
._span,
._strong,
._sub,
._sup {
	display: inline;
}

/* #endif */

/* #ifdef MP-WEIXIN || MP-QQ */
.__bdo,
.__bdi,
.__ruby,
.__rt {
	display: inline-block;
}

/* #endif */
._video {
	position: relative;
	display: inline-block;
	width: 300px;
	height: 225px;
	background-color: black;
}

._video::after {
	position: absolute;
	top: 50%;
	left: 50%;
	margin: -15px 0 0 -15px;
	content: '';
	border-color: transparent transparent transparent white;
	border-style: solid;
	border-width: 15px 0 15px 30px;
}
</style>
